A novel parameter by EFOV US for the quantification and the distinction of physiological amount of scrotal fluid and hydrocele: ratio of testis volume/scrotum volume.

Abstract:

OBJECTIVE:To determine the limits for the amount of tunical fluid enough to be termed as hydrocele by using extended-field of view US technology and to define hydrocele for the first time with standard numerical criteria. METHODS:A total of 60 patients were evaluated in this prospective study. Group 1 consisted of 20 patients with unilateral clinical hydrocele. Group 2 included 20 patients referred for scrotal US for reasons other than hydrocele. Group 3 comprised 20 male controls with no scrotal complaints. Testis volume (V(t)), scrotum volume (V(s)) and V(t)/V(s) ratio were calculated for each subject by dimensions measured in longitudinal and tranverse planes. RESULTS:Mean V(t)/V(s) ratio was 0.28 +/- 0.17 (range, 0.07-0.57), 0.69 +/- 0.08 (range, 0.53-0.80) and 0.71 +/- 0.07 (range, 0.61-0.85) for groups 1, 2 and 3, respectively. Mean V(t)/V(s) for group 1 was significantly lower than those for groups 2 and 3, respectively (p<0.001 for each). Based on the ROC curve analysis, 0.55 for V(t)/V(s) ratio was determined as the optimal cut-off point below which the US diagnosis of hydrocele could be made (sensitivity 95.0% and specificity 97.5%). CONCLUSIONS:We propose a novel US parameter of V(t)/V(s) ratio below 0.55 for a standard distinction between hydrocele and physiological amount of scrotal fluid.

journal_name

Eur J Radiol

authors

Turgut AT,Ozden E,Unsal A,Koşar P,Coşkun ZU,Koşar U

doi

10.1016/j.ejrad.2007.02.001

subject

Has Abstract

pub_date

2007-09-01 00:00:00

pages

414-9

issue

3

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(07)00073-3

journal_volume

63

pub_type

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